net/systemeD/halcyon/styleparser/RuleSet.as

   1 package net.systemeD.halcyon.styleparser {
   2
   3         import flash.events.*;
   4         import flash.net.*;
   5         import net.systemeD.halcyon.Globals;
   6         import net.systemeD.halcyon.Map;
   7         import net.systemeD.halcyon.ImageURLLoader;
   8     import net.systemeD.halcyon.connection.Entity;
   9 //      import bustin.dev.Inspector;
  10
  11         public class RuleSet {
  12
  13                 private var map:Map;
  14                 public var choosers:Array=new Array();  // list of StyleChoosers
  15                 public var images:Object=new Object();  // loaded images
  16                 private var iconCallback:Function=null; // function to call when all icons loaded
  17                 private var iconsToLoad:uint=0;                 // number of icons left to load (fire callback when ==0)
  18
  19                 // variables for name, author etc.
  20
  21                 public function RuleSet(m:Map,f:Function=null):void {
  22                         map=m;
  23                         iconCallback=f;
  24                 }
  25
  26                 // Get styles for an object
  27
  28                 public function getStyles(obj:Entity,tags:Object):StyleList {
  29                         var sl:StyleList=new StyleList();
  30                         for each (var sc:StyleChooser in choosers) {
  31                                 sc.updateStyles(obj,tags,sl);
  32                         }
  33                         return sl;
  34                 }
  35
  36                 // ---------------------------------------------------------------------------------------------------------
  37                 // Loading stylesheet
  38
  39                 public function loadFromCSS(str:String):void {
  40                         if (str.match(/[\s\n\r\t]/)!=null) { parseCSS(str); return; }
  41
  42                         var request:URLRequest=new URLRequest(str);
  43                         var loader:URLLoader=new URLLoader();
  44
  45                         request.method=URLRequestMethod.GET;
  46                         loader.dataFormat = URLLoaderDataFormat.TEXT;
  47                         loader.addEventListener(Event.COMPLETE,                                         loadedCSS,                              false, 0, true);
  48                         loader.addEventListener(HTTPStatusEvent.HTTP_STATUS,            httpStatusHandler,              false, 0, true);
  49                         loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR,      securityErrorHandler,   false, 0, true);
  50                         loader.addEventListener(IOErrorEvent.IO_ERROR,                          ioErrorHandler,                 false, 0, true);
  51                         loader.load(request);
  52                 }
  53
  54                 private function loadedCSS(event:Event):void {
  55                         parseCSS(event.target.data);
  56                 }
  57
  58                 private function parseCSS(str:String):void {
  59                         var css:MapCSS=new MapCSS(map);
  60                         choosers=css.parse(str);
  61 //                      Inspector.getInstance().show();
  62 //                      Inspector.getInstance().shelf('Choosers', choosers);
  63                         loadImages();
  64                 }
  65
  66
  67                 // ------------------------------------------------------------------------------------------------
  68                 // Load all referenced images
  69                 // ** will duplicate if referenced twice, shouldn't
  70
  71                 public function loadImages():void {
  72                         var filename:String;
  73                         for each (var chooser:StyleChooser in choosers) {
  74                                 for each (var style:Style in chooser.styles) {
  75                                         if      (style is PointStyle  && PointStyle(style).icon_image   ) { filename=PointStyle(style).icon_image; }
  76                                         else if (style is ShapeStyle  && ShapeStyle(style).fill_image   ) { filename=ShapeStyle(style).fill_image; }
  77                                         else if (style is ShieldStyle && ShieldStyle(style).shield_image) { filename=ShieldStyle(style).shield_image; }
  78                                         else { continue; }
  79
  80                                         iconsToLoad++;
  81                                         var request:URLRequest=new URLRequest(filename);
  82                                         var loader:ImageURLLoader=new ImageURLLoader();
  83                                         loader.dataFormat=URLLoaderDataFormat.BINARY;
  84                                         loader.filename=filename;
  85                                         loader.addEventListener(Event.COMPLETE,                                         loadedImage,                    false, 0, true);
  86                                         loader.addEventListener(HTTPStatusEvent.HTTP_STATUS,            httpStatusHandler,              false, 0, true);
  87                                         loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR,      securityErrorHandler,   false, 0, true);
  88                                         loader.addEventListener(IOErrorEvent.IO_ERROR,                          ioErrorHandler,                 false, 0, true);
  89                                         loader.load(request);
  90                                 }
  91                         }
  92                 }
  93
  94                 // data handler
  95
  96                 private function loadedImage(event:Event):void {
  97                         images[event.target.filename]=event.target.data;
  98                         iconsToLoad--;
  99                         if (iconsToLoad==0 && iconCallback!=null) { iconCallback(); }
 100                 }
 101
 102                 private function httpStatusHandler( event:HTTPStatusEvent ):void { }
 103                 private function securityErrorHandler( event:SecurityErrorEvent ):void { Globals.vars.root.addDebug("securityerrorevent"); }
 104                 private function ioErrorHandler( event:IOErrorEvent ):void { Globals.vars.root.addDebug("ioerrorevent"); }
 105
 106         }
 107 }